Security readout for executives and security teams
CVE-2021-21663 is a Jenkins plugin credential-exposure issue. A user with only Overall/Read access could abuse the XebiaLabs XL Deploy Plugin to make Jenkins connect to a chosen URL using stored username/password credentials, potentially revealing those credentials. Exposure is limited to Jenkins controllers with the XebiaLabs XL Deploy Plugin 7.5.8 or earlier installed, reachable by users with Overall/Read permission, and containing username/password credentials that could be referenced by credential IDs. Treat this as a high-priority Jenkins credential risk if the affected plugin is installed. The business concern is not service disruption; it is theft of credentials that may unlock deployment systems or other connected infrastructure. Mitigation focus: Inventory Jenkins instances for XebiaLabs XL Deploy Plugin versions 7.5.8 and earlier.; Review the Jenkins advisory and apply vendor-recommended updates or plugin changes.; Disable or remove the plugin where it is not operationally required..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-21663 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.